Sky has no news(group) server.
There are not really any free reliable newsgroup servers since you always need to subscribe to an internet service provider (isp). You could also try giganews, but it'll cost you.

__________________Now that I have children I can see how tuned they are to the world. Living crystals tuned to all manner of frequencies. And how urgently they need to be heard. They look up and they say, look at me. And I put my phone away.